NOTE: As their name suggests hints are not exactly Demolition Inc. cheats, and are usually just simple (but very useful) tips on how you can unlock secret level, features, find hidden areas and such. Hopefully these will make playing Demolition Inc. even more entertaining.

Steam Achievements
Amateur Driver: You drove a car for 10s.
Barbeque: You grilled 10 cows.
Bulldozer: You bulldozed 10 buildings.
Car Collector I: Wrecked 20 cars.
Car Collector II: Wrecked 100 cars.
Car Collector III: Wrecked 500 cars.
Chef: You grilled 30 cows
City Dominator: You levelized each city.
City Eater: You levelized 1 city.
City Muncher: You levelized a city with all stars.
Cosmic Bulldozer: You destroyed 30 buildings.
Drift King: You drifted with a car 60s.
Earth Crusher: You levelized each city with all stars.
Expert Driver: You drove a car for 60s.
First Things First: You managed to finish your first mission.
Freshman: Just started the game.
Galactic Bulldozer: You destroyed 100 buildings
Gourmet: You grilled 100 cows.
Oily wheels: You drifted with a car 10s.
Professional Driver: You drove a car for 20s.
Slider: You drifted with a car 30s.
Sophomore: Second thing done!